Question

A six pole,60 Hz synchronous motor is connected to an infinit
bus of 15 KV through a transmission line.The synchronous reactance
of the motor is 5 ohm ,and the inductive reactive reactance of the
transmission line is 2 ohm .when Ef is adjusted to 16kV (line to
line),the reactive power at motor's terminal is zero.

Calculate the terminal voltage and developed torgue of the
motor?draw the phasor diagram of the system.